Shower curtain fastener



FIG. 1 is a perspective view of a shower curtain fastener showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevation view thereof;

FIG. 4 is a front elevation view thereof; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM The ornamental design of the shower curtain fastener, as shown. 